Self explanatory. If you don't
get it, let me explain for yourself. "Buttering the bean", or "buttering your bean", is in
essence busting your nut full of semen on a girls clitoral region, aka the "bean".
"I'm gonna butter your bean you dirty
whore"
Guy 1 - "Oh brah, did you butter her bean last night?"
Guy 2 - "Yeah
dude I
hope I didnt get her preggers"
Girl - "MMMMMMM he buttered my bean so good last night, it took us hours to clean it all up!"